Spraying nozzle



D. ELDER SPRAYING Aug. 16

NOZZLE Filed Feb. 11, 1926 Patented u 16,1927

UNITED STAT lgesaz zo' noun/n ELDER, or ominunch, vrrrw znammn.

srnarme nozzra.

Application filed- Iehruary 11, 1.926, Serial No. 87,631, and in Australia February 28, 1925.

L This invention refers to spraying devices for water and the like under pressure and has been devised principally to provide a,

nozzle that will ensure an even distribution of water over. an area of ground surface of approximately "seml-circular or quadrant nozzle for the purpose there is formed in the side an approximately V-shaped gap communicating with the bore of the nozzle and with the upper wall surface of the gap in-' clined to overlie the outlet of the bore and perfectly fiat, saidnozzle being'used to spray semi-circular areas of ground. This form of nozzle is unsatisfactory as the largest volume of the water is thrown from the centre -of the upper wall surface of the gap straight forwardly with the result that only a small quantity is sprayed at the sides and moreover the water droops at the side corners of the gap, the result being uneven watering of the I ground at the sides or cornersjof lawns for instance. 1 I

According to these improvements the upper wall surface of the gap is not flat but curved towards its side ed es. The extent of the gap determines t e fan shaped area of ground that will be sprayed The nozzle is applicable to most forms of spraying. means such as standard rotary frames and spring controlled valvular nozzles operated by the water pressure and used at the groundlevel and the invention incor-1 porates certain improvements in said valvular nozzles. 7 I

In the accompanying drawings, Figure 1 is a vertical section through one of the val-- 'vular spraying. devices used at the ground level and incorporating the improvements. Figure 2 is an enlarged front elevationvof the nozzle used for'semi-circular spraying,

and

Figure 3 a side 'elevation.- Fi re 4 is a similar view to Figure 3 but owing the gap shortened to adapt the nozzle for spraying corners oflawns.

Figure 5 is a view showing either the stationary or revolving type.

The nozzles 1 of the devices have the usual the, nozzle as adapted for standard spraying'apparatus of cut 91f I n and the approximately V-shaped gap 3 formed in the sideof the nozzle, the upper .wall surface 4 of the gap being curved away towards its side edges 16.

For the purpose of forming the approximately conveiz surface a rotating cutter having two diametricallv opposed teeth and -v formed of small diametermay be employed.

With such a cutter, the upper wall 4 of the gap, which is;V-'shaped iii-section, 'will have a convex cylindrical form, and the lower wall will have a concave form.

The combining of convex wall with V- shaped gap so directs the water that it will form a true semi-circle and not an ellipse in which the length is greater than the-width.

The combined V-shaped gap and cylin drical surface also produce a more uniform The cutter which forms no part of the injvention is indicated in broken lines in Fig ure2 I If a semicircular distribution of'water ex- J tending degrees is required the inner end of the gap 3 terminates just clear of the bore\2 as in Figure 3. If a corner spray is required to spread water over a quadrant shaped area through 90 degrees the depth of The nozzle'extends through a, cylindrical casing 7 screwed to the T junction 8 of the water supply pipe andit has at the top the usual mushroom head valve 19 that fits a seating 9 formedin the top of the casing. The inner end ofthe nozzle is screwed into a cylindrical nut 10 against which the spring 11 in the casing bears and said nut is formed with a circular flan e 14. With this construction the water u nder pressure impinges against said flange and so raises the nozzle and maintains its gap 3 clear ofthe top of the casing. with if the nozzle is of suflicient weight to close the valve when the Th 11 y e spring may e dispensed water supply is 5 standard 13 said nozzle having This construction is an improvement on the known form in which the nut is formed with passages for the water which raises the nozzle by impinging on the valve.

' Figure 5 illustrates the nozzle 1 formed integral with a nut 12 which is screwed on a a gap with the curved surface asdescribed.

I claim:

1. A sprayer comprising a nozzle having a bore, and a lateral gap V-shaped in cross section, the said bore terminating insaid gap, the wallof said gap opposite the bore being a convex-cylindrical surface and the opposite Wall'bein'g a concave-cylindrical the Wallof said gap opposite the bore bei g a c -nvex-cylindrical surface and the opposite wall being a concave-cylindrical surface, and

the corners of the gap being closed to direct a spray less than a semi-circle. k Dated this 11th day of January. 1926..

' DONALD ELDER. 

